Sorry, my mistake. The NGK coding is as follows Example: NGK DCPR8EIX-9 iridium plug D = 12 mm thread diameter C* = Hex size 5/8 in. (16 mm) - standard Ducati OE plug wrench (non-C 18 mm hex) P = Projected insulator type R = Resistor type 8 = hotter 9 = cooler E = 19 mm thread reach A = special design VX = platinum IX = iridium -9 = 0.9 mm gap Also, you should only use resistor-type plugs in a Ducati 8xx bike. The main concern is with the computer found used on fuel injected bikes as the radiated EMI can interfere with the computer and corrupt signals which can affect engine performance and reliability. Theoretically, non-resistor plugs can provide more power, but the reality is that the ignition noise they produce can corrupt computer signals. [Edited on 12-2-2005 by Shazaam!] |